Photos--Please help! Is it dead or can it be resuscitated?
Our friend John has two well-established camellias in his back yard. They are maybe (just guessing here) 25 years old, over 6 feet tall, and one has white flowers and one has red flowers and they bloom at different times. They are next to one another--the first photo is with me facing West to take the picture. These photos were taken around 1:30 pm today.
The white camellia bush has dropped almost all of its leaves within the past few months, and now is mostly bare branches. We cannot remember this happening ever. John lives in east San Diego county, where winters are rather mild. These two bushes are in the shade from the back part of the house--the back part of the house faces North. You can see it still has some green leaves on the tips of its branches.
Close up of branches with dessicated leaves, but you can see green leaves at the tips of the branches:
How do we know if it's dead? If it's not dead, what is wrong with it and how can we help it?
The red camillia bush is blooming now, but has some dark and yellow-ish areas on its leaves. What is it and what can we do to help it? Also, being rather unfamiliar with things, when is a good time to trim back these bushes in the southern California region?
Thanks for any help!